Contact-breaker.



No. 728,632. yPA'IEIITED MAY 19, 1903.

C. F. SPLITDORF. v CONTACT BREAKER. PPLIoATmN FILED BEM. 19, 1902.

xo 10ML. 2 SHEETS-SHEET 1.

@VMM I A TTOHNEY l 1S gg w/TNE 65s PATENTBD MAY 19, 1903.

G. F. SPLITDORF..

CONTACT BREAKER.

APPLioA'rIoN rILnn snr'r. 19, 1902.

2 SHEETS-SHEET 2.

FO IODEL,

W/ TNESSES A TOHNEY YPatented May 19, 1903.-.

PATENT OFFICE.

CHARLES F. SPLITDORF, ,OF NEW YORK, N. Y.

coNTAoT-e'Bi-:AKEa

SPECIFICATION forming part of Letters Patent No. 728,632, dated May 19, 1903'.

Application filed September 19, 1902. `Serial No. 123,996. (No model.)

To @ZZ whom it may concern,.-

Beit known that I, CHARLES F. SPLITDORE,l

a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Contact-Breakers, of which the following is a specification.

This invention relates to contact-breakers for induction-coils; and it comprises in par` ticular certain-novel means permitting the delicate and positive adjustment of the ar-A mature-spring, whereby its degree of tension may be regulated with eXactness without liability to change unless manipulated, and thus the desired speed of vibration is assured.` A

A further feature of my invention lies in the extreme simplicityof the several parts employed and the ease and rapidity with which the armature-spring adjustment and its positive locking may be effected.

In the drawings accompanying this application, Figure l is an end view of a coil-casing having mounted thereon my improved contact-breaker. Fig. 2 is a side section thereof. Fig. 3 is an end view of a case containing several coils and showing a modified form of adjusting device more conveniently arranged for manipulation. Fig. 4 is a side section thereof. Fig. 5 is a front elevation of my contact-breaker. Fig. 6 is a side view thereof with section of casing. Fig. 7 is a rear elevation thereof. Fig. 8 is a front elevation of the contact-breaker having a modified form of adjustment. Fig. 9 is a side View thereof with section of casing. Fig. IO is a rear elevation. detail view of the adjusting-screw. Figs. l2 and 18 are enlarged detail views of the armature-spring.

In the figures, Aindicatesa coil-casing; B, a base or support for a spring C, which latter is 'secured theretoat one end, as by screws b,

said spring carrying an armature D at its opposite end. Said base is secured to the casing in'any desired manner, as by screws d.

E indicates the usual platinum tip, located at the rear of armature D and adapted to contact with a platinum tip, as F, that is located at the end of an adjusting-screw, as G. This screw G is threaded through a slot 7L in bridge H, mounted upon the casing A, and is securely held within the slot h by a tightening- Fig. ll is an enlarged screw h. The sloth in bridge His provided about centrally of its length with a threaded passage for the reception ofthe contact-pointadjusting screw G, which latter by turning its knurled head may be regulated to adjust the distance desired between the platinum points E F.

I/Vhile I may use only one tightening-screw, vas h', I prefer to employ two, one at each side of the screw G. T hese screws h are vscrewed transversely through the bridge I-I and tightened to contract the divided members thereof and bind them upon screw G to secure the latter in place. The bridge is secured to the coil-casing by screws g2, passed through threaded passages formed one at each end within the slot h.

The support B is provided vwith an extension, as I, that lies beneath the spring C, in an approximately parallel plane therewith when said spring is Without tension. Said extension I is in the manner of a tongue and is provided toward its free end with a slot, which in the form of my invention shown in Figs. 1, 2, 5, 6, and 7 lies in a plane parallel with the sides of the tongue I, the slot being indicated by theletter A threaded orice t" is formed intermediate the slotdivided tongue members, and the threaded portionj of an adjustment-screw J is introduced therein. The screw Jhas reduced portionj, bounded 'by the upper end of the thread j, and an enlarged shoulder portion y2, and said reduced portion j is adapted to be loosely contained within the contracted extension k of a slot K, formed in the spring C and located in alinement with the threaded orifice i. In advance of the orifice t" near the open end of slot t, but at right angles thereto, another threaded ori- Iice L is provided, and a screwZ is introduced therein, uniting the two tongue melnbers over the slot and binding them tightly over the screw J to lock the latter to its adjusted position. Because with the arrangement of lock-screw l it would be diicult to apply a screw-driver to one of several such devices when attached in a row to a coil-casing containing several coils I have, as seen in Figs. 3, 4, 8, 9, and 10, formed the slot (indicated by the letter M) in a plane parallel with the front and rear surfaces of the tongue I; also, with this form of slotted tongue the screw- IOO orifice, as m, passes through the tongue at right angles to the slot, and a further screworiice m to receive the lock-screw l is formed parallel with orifice m. The slot in spring C for thismoditied form is elongated to permit the exposure of screw Z therethrough and to enable a screw-driver to be applied thereto.

As will be clearly perceived from the foregoing description, the armature-spring C, which is secured to the support B by screws b, can by loosening the lock-screw l be readily and accurately adjusted to any desired degree of tension by turning the screw J and the speed of vibration thus determined, and, further, that in tightening up the screw Z or Z the position of the vibrator is set or locked without the slightest deviation ensuing from the act of binding or locking it. It will also be evident that whereas the laterally ar7 ranged lock-screwl is very convenient and serviceable where only one or two contactbreakers are mounted side by side upon a coil-casing, yet when three or more contactbreakers are arranged in line upon a coil-cas= ing the locking-screws of the intermediate devices could not be conveniently operated by a screw-driver if arranged laterally, whereas the lock-screw, as Z', is in position to be operated fr-om the front of the device.

I claim- In a contact-breaker, a vibrator-spring carrying an armature and contact-point, a support for said spring, a slotted body, a screw member having a narrowed portion, a slot in the vibrator-spring to receive said narrowed screw portion, a threaded orifice in the slotted body to receive the screw member, and a lock-screw threaded through the slotted body to contract its members.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

C. F. SPLITDORF.

Witnesses:

NAT. B. CHADSEY, NATHAN B. CHADsEY. 

